ArchWarrior
But that is why places like NORAD is in place is it not. To feed false info to the enemy while giving to true info to your people. I wouldn't bet that the "own" people get the truth served. You will want their support, so in most cases some of these mechanisms are used:
make them hate the enemy and see them as inferior.It will make it more easy for your soldiers to fight them as some moral questions get out of scope that way.
make the engagements you won look glorious and those you lost just as minor incidents.You want to inhibit people from questioning your war. So never tell the real costs (be it money or lives), try to keep on the illusion that success is just around the corner.
Use a lot of euphemism. Your people don't torture, they just do serious interogations. When you hit some wrong people that is no error, just call it colateral damage.Errors will happen, but you don't want anyone to blame the system for it. If s**t happens it will always be some personal failure of someone low in the chain of command, but in no way you want it to look like it was planned or system intrinsic.
There are a lot more of these mechanisms to use. In my oppinion many of those institutions telling you the "truth" are just like the "ministery of truth" (read 1984 by George Orwell for further reference).